/*******************************************************************************
 * Copyright (c) 2000, 2011 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.che.ide.ext.java.jdt.text.rules;


import org.eclipse.che.ide.ext.java.jdt.text.Document;


/**
 * A partition token scanner returns tokens that represent partitions. For that reason,
 * a partition token scanner is vulnerable in respect to the document offset it starts
 * scanning. In a simple case, a partition token scanner must always start at a partition
 * boundary. A partition token scanner can also start in the middle of a partition,
 * if it knows the type of the partition.
 */
public interface PartitionTokenScanner extends TokenScanner {

    /**
     * Configures the scanner by providing access to the document range that should be scanned. The
     * range may not only contain complete partitions but starts at the beginning of a line in the
     * middle of a partition of the given content type. This requires that a partition delimiter can
     * not contain a line delimiter.
     *
     * @param document
     *         the document to scan
     * @param offset
     *         the offset of the document range to scan
     * @param length
     *         the length of the document range to scan
     * @param contentType
     *         the content type at the given offset
     * @param partitionOffset
     *         the offset at which the partition of the given offset starts
     */
    void setPartialRange(Document document, int offset, int length, String contentType, int partitionOffset);
}
